Quote:
Originally Posted by Webstral
... SAMAD copes with the maintenance issues with a combination of training and lubrication. A chemist at University of Arizona at Tucson perfects a workable means of producing a silicone-type of lubricant to replace petroleum-based lubricants.
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Don't forget graphite powder lubricant for smallarms, although it does tend to be corrosive to aluminium and some other alloys if the powder gets wet. Graphite powder lubes can also be found in hardware stores and may be overlooked by the average cityslicker looking for weapons lube.
Plus there are several regions where it's mined in North America. This page has a map right at the bottom showing localities for graphite deposits
http://www.mindat.org/min-1740.html Zooming in shows a number of sites in Arizona so graphite mining may be extra food for thought for you?